Log ind
JAMB - Biology (1982 - No. 40)
Flatworms and roundworms are said to be invertebrates because
they are small animals
they can live inside the vertebrates
some of them are unicellular
they have no backbones
they are parasitic
Kommentarer (0)
Log ind for at kommentere
Reklame
Tillad, at javascript indlæser denne side korrekt
